Math Help List-

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# How to Input an Expression

### Arithmetic operations

Addition: '+'; example: 5 + 7
Subtraction: '-'; example: 15 - 12
Multiplication: '*'; example: 5 * 2
Division: '/'; example: 18 / 3
Factorial: '!'; example: 5! = 120

### Relational operators

Operators: < , > , <= , >=

### Variables and Parameters

For the online math calculator you can use 'x' as a variable; example: x + 6;

In some of the calculators, where you can input the variable, for example
the derivative calculator, the integrals calculator, and so on, you can use any other variable.

You may also use letters from the alphabet as real parameters in your expressions. See example below.

Example: the derivative of   "a*x" with respect to 'x' is a
while the derivative of the same function:   "a*x" with respect to 'a' is x

### Functions

The following functions can be used:

sqrt-square root ; exp-exponential, equivalent to %e^x ; log-natural logarithm- ; abs-absolute value or modulus

Trigonometric functions:sin cos sec csc tan cot asin acos asec acsc atan acot sinh cosh sech csch tanh coth asinh acosh asech acsch atanh acoth

Other functions : erf-error function ; decimal logarithm: log(x)/log(10)

### Constants and Special Constants

%e - Euler's number
%i - Imaginary unit, sqrt(-1)
%pi - PI - 3.141592653589793....
%phi - The Golden Mean, calculated with: (1 + sqrt(5))/2
inf - Real positive infinity
minf - Real negative infinity

### Examples of complex expressions

3*sin(x^3)
-2*x*log(%e^7)
sin(cos(x) *% e^x)
sqrt(abs(x))

### How to Read the Output

As you may have already seen, our tools give the answer in a readable and easy to understand way.
Unlike other calculators, the result from our calculators can copied and pasted in your own documents.

Notations and conventions:

2
x      is the second power of  'x' , x^2

2 x   is    2*x = x+x

sin(x)
--------      is sin(x)/log(x)
log(x)

and so on . . .